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XB-ART-39925
Cancer Biol Ther 2008 Dec 01;712:1867-74. doi: 10.4161/cbt.7.12.6945.
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Apoptosis and tumor resistance conferred by Par-4.

Zhao Y , Rangnekar VM .


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Par-4 is a tumor suppressor protein with a pro-apoptotic function. Epigenetic silencing of Par-4 is seen in diverse tumors and Par-4 knockout mice develop spontaneous tumors in various tissues. Endogenous Par-4 is essential for sensitization of cells to diverse apoptotic stimuli, whereas ectopic expression of Par-4 can selectively induce apoptosis in cancer cells. The cancer-specific pro-apoptotic action of Par-4 resides in its centrally located SAC domain. This review emphasizes the role of Par-4/SAC in apoptosis and tumor resistance. SAC transgenic mice display normal development and life span, and, most importantly, are resistant to spontaneous, as well as oncogene-induced, autochthonous tumors. The tumor resistant phenotype and undetectable toxicity of SAC in vivo suggests the SAC domain possesses tremendous therapeutic potential.

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Species referenced: Xenopus laevis
Genes referenced: pawr

References [+] :
Affar, Targeted ablation of Par-4 reveals a cell type-specific susceptibility to apoptosis-inducing agents. 2006, Pubmed